Anaerobic filter

Patent · Tue Feb 04 04:00:00 EST 1986

OSTI ID:6127221

Blay, G A; Witt, E R

This patent describes a process for the treatment of an organic waste-water stream containing COD in a recycling anaerobic filter which contains methanogenic bacteria, operates at a COD feed rate, OL, which is at least 0.5 lb COD/cu. ft./day and at a recycle ratio of at least 2:1, and produces a stream of gas comprising methane. The improvement described here consists of continually carrying out an alternating sequence of steps at least once per hour. It also includes an apparatus for the treatment of an organic wastewater stream containing COD in an anaerobic reactor which consists of a vessel containing a backmixed bed of methanogenic bacteria, a method for feeding the wastewater stream to the reactor, for controlling the COD feed rate, OL, of the wastewater stream, a way for withdrawing an aqueous liquid effluent stream from the reactor and a way for withdrawing a gaseous stream.

• Assignee: Celanese Corporation, New York, NY
• Patent Number(s): US 4568464
• OSTI ID: 6127221
• Country of Publication: United States
• Language: English

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59 BASIC BIOLOGICAL SCIENCES
ALKANES
ANAEROBIC DIGESTION
BACTERIA
BIOCONVERSION
BIOREACTORS
BIOSYNTHESIS
CHEMICAL OXYGEN DEMAND
DIGESTION
FILTERS
HYDROCARBONS
HYDROGEN COMPOUNDS
LIQUID WASTES
MANAGEMENT
METHANE
METHANOGENIC BACTERIA
MICROORGANISMS
ORGANIC COMPOUNDS
OXYGEN COMPOUNDS
PROCESSING
QUANTITY RATIO
RECYCLING
SYNTHESIS
WASTE MANAGEMENT
WASTE PROCESSING
WASTE WATER
WASTES
WATER
WATER TREATMENT